A tank of water is losing 5 liters of water every minute. In 12 minutes, there are 90 liters remaining in the tank. How many minutes will it take for the tank to be empty? A. 18 minutes
B. 30 minutes
C. 45 minutes
D. 78 minutes

Answer

A. 18 Minutes

Step-by-step explanation:

5 liters of water per minute x 12 minutes = 60

60 + 90 = 150

150/5=30

30-12=18

Its either 18 or 30

percentage - 25%

probability - 0.25

we know,

total amount of students in class = 20

total boys = 10

total girls = 10

no of girls who wear glasses = 10/2 = 5

probability of choosing a girl with glasses is =

number of girls wearing glasses/total number of students in the class = 5/20

thus, percentage of selecting a girl wearing glasses will be

= 5/20 × 100

= 5 × 5

25%

therefore,

probability will be 0.25

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